What does fault code ECM-P053F21 mean?

Diagnostic fault code details for ECM-P053F21 (Volvo S60 (2011–), Volvo S60 (2011–), Volvo S80 (2007–)). Repair service at OBD Tuning.

VOLVO

ECM-P053F21 - Cold Start Fuel Pressure Performance. General Signal Failures. Signal too low

System

Engine Control Module (ECM)

Volvo models this fault code applies to

Applies to the following models:

5 models

S60 (2011–), S80 (2007–), V60 (2011–), V70 (2008–), XC60 (2009–)

Show models by year and engine (12)

What does this fault code mean?

At starting the ECM requests a certain fuel pressure. The code is set when the correct fuel pressure is not reached during the start attempt, that is, when the pressure is too low compared with what is requested. This is a signal fault.

Possible causes

No specific cause is stated for this fault code

What you can do

1Check that the fuses for the fuel pump and the engine control are intact
2Listen for the fuel pump running when the ignition is switched on
3Check the battery condition, as low voltage can affect the fuel pump
4If you have a diagnostic tool, read the fuel pressure in live data during a start attempt and see whether it rises to a reasonable level
5Clear the code and make a test start with the engine cold to see whether it returns
6If the fault returns, have a workshop with diagnostic equipment check the fuel pressure and the fuel system

Symptoms you may notice3

The check engine lamp lights or behaves abnormally
Hard to start, with the engine cranking slowly, especially when cold
Black smoke from the exhaust

General guidance for car owners. Diagnosis on the car can point to a different cause.